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The assessment of genetic diversity within and among the eight subpopulations of J apanese B lack cattle using 52 microsatellite markers
Author(s) -
Nishimaki Takahiro,
Ibi Takayuki,
Tanabe Yoshihiro,
Miyazaki Yoshiyuki,
Kobayashi Naohiko,
Matsuhashi Tamako,
Akiyama Takayuki,
Yoshida Emi,
Imai Kazumi,
Matsui Mayu,
Uemura Keiichi,
Watanabe Naoto,
Fujita Tatsuo,
Saito Yosuke,
Komatsu Tomohiko,
Yamada Takahisa,
Mannen Hideyuki,
Sasazaki Shinji,
Kunieda Tetsuo
Publication year - 2013
Publication title -
animal science journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.606
H-Index - 38
eISSN - 1740-0929
pISSN - 1344-3941
DOI - 10.1111/asj.12045
Subject(s) - genetic diversity , breed , biology , microsatellite , population , genetics , evolutionary biology , gene , allele , demography , sociology
J apanese B lack cattle are at risk for genetic homogeneity due to intensive use of a few sires. Therefore, assessment of the actual genetic diversity of this breed is important for future breeding plans. In the present study, we investigated the genetic diversity within and among eight subpopulations of J apanese B lack cattle using 52 microsatellite markers. The parameters for genetic diversity of J apanese B lack cattle were comparable to those of other cattle breeds, suggesting that the relatively high genetic diversity of the breed. However, upon comparison among the eight subpopulations, the H yogo subpopulation showed markedly low genetic diversity. The results of the pairwise F ST values, phylogenetic network and structure analysis indicated that the H yogo population has remarkably high level of genetic differentiation from other populations, while Y amagata, N iigata, H iroshima and K agawa populations have low levels of genetic differentiation. Furthermore, multidimensional scaling plots indicated that individuals in some subpopulations were separated from individuals in the other subpopulations. We conclude that while the overall genetic diversity of J apanese B lack cattle is still maintained at a relatively high level, that of a particular subpopulation is significantly reduced, and therefore the effective population size of the breed needs to be controlled by correct mating strategies.